diff --git a/flake.nix b/flake.nix
index 91817dc..388cc00 100644
--- a/flake.nix
+++ b/flake.nix
@@ -70,6 +70,7 @@
       storage-2 = { name = "storage-2"; };
       web-2 = { name = "web-2"; };
       zinc = { name = "zinc"; };
+      # nixfiles-auto-install: add new host above
       _iso = { name = "_iso"; };
     };
 
diff --git a/pkgs/nixfiles/nixfiles-auto-install.sh b/pkgs/nixfiles/nixfiles-auto-install.sh
index 9f015cc..3d6ad50 100644
--- a/pkgs/nixfiles/nixfiles-auto-install.sh
+++ b/pkgs/nixfiles/nixfiles-auto-install.sh
@@ -105,6 +105,10 @@ nixfiles-generate-config --root /mnt --hostname "${hostname}"
 
 sed -i "s~# boot\.loader\.grub\.device = \"/dev/sda\";~boot\.loader\.grub\.device = \"${device}\";~g" "/mnt/etc/nixos/hosts/${hostname}/configuration.nix"
 
+if ! grep -w "${hostname}" <(nix eval "/mnt/etc/nixos#clerie.hosts" --apply 'hosts: builtins.concatStringsSep "\n" (builtins.attrNames hosts)' --raw 2> /dev/null) > /dev/null; then
+  sed -i "s/\(\s*\)# nixfiles-auto-install: add new host above/\1${hostname} = { name = \"${hostname}\"};\n&/g" /mnt/etc/nixos/flake.nix
+fi
+
 echo "[I] Install NixOS"
 
 NIX_CONFIG=$(printf "extra-experimental-features = flakes nix-command\nextra-substituters = https://nix-cache.clerie.de\nextra-trusted-public-keys = nix-cache.clerie.de:bAt1GJTS9BOTcXFWj3nURrSlcjqikCev9yDvqArMP5g=\n")